121231102231234 has 4 divisors (see below), whose sum is σ = 181846653346854. Its totient is φ = 60615551115616.

The previous prime is 121231102231207. The next prime is 121231102231313. The reversal of 121231102231234 is 432132201132121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 118973490805009 + 2257611426225 = 10907497^2 + 1502535^2 .

It is a super-5 number, since 5×121231102231234⁵ (a number of 72 digits) contains 55555 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30307775557807 + ... + 30307775557810.

Almost surely, 2^{121231102231234} is an apocalyptic number.

121231102231234 is a deficient number, since it is larger than the sum of its proper divisors (60615551115620).

121231102231234 is an equidigital number, since it uses as much as digits as its factorization.

121231102231234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60615551115619.

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 121231102231234 its reverse (432132201132121), we get a palindrome (553363303363355).

The spelling of 121231102231234 in words is "one hundred twenty-one trillion, two hundred thirty-one billion, one hundred two million, two hundred thirty-one thousand, two hundred thirty-four".